Tantawiwattananon, NSangloung, CBuddhirongawatr, RSukthana, YMahidol University. International College. The Office of Planning Research and Development.2014-10-102018-02-222014-10-102018-02-222014-10-102006Southeast Asian Journal of Tropical Medicine and Public Health. 37(suppl 3), (2006), 21-23https://repository.li.mahidol.ac.th/handle/20.500.14594/8774The Mongolian gerbil (Meriones unguiculatus) is susceptible to infection with Giardia duodenalis trophozoites. Each animal was orally infected with 0.5 ml Diamond's TYIS-33 culture medium containing 10(6) trophozoites. Cysts were then collected and concentrated by sucrose gradient centrifugation. G. duodenalis cysts were first observed in feces on day 5 post-infection. The characteristic of G. duodenalis infection in gerbils was intermittent cyst release. The range in the number of cysts released per gerbil for a 4-hour collection period was 0-1.5 x 10(3).engMahidol UniversityGiardia trophezoiteMongolian GerbilsArticle-